Problems with running educational sessions in 2nd Life

Taken from Massively:

"Partway through the 90 minute Q&A session, the educator vanishes, but returns in the last half hour, suddenly flooding the area with his whole class, who had so far had little actual experience with Second Life, no idea what they were doing, and little idea about their purpose in being there. The remaining 30 minutes of the session was a mish-mash of unproductive cross-talk and likely yielded little or no positive outcomes for anyone present."

It seems this kind of activity needs its own set of rules establishing ...